As children go back to school across the UK parents are hoping their uniforms will last long enough to see them through the rest of the year - or at least a couple of terms.
Now one mum has found a hidden feature in some school trousers designed to make sure they last as long as possible.
The added feature should ensure you get at least a couple more months out of the school uniform - even if your young one has a growth spurt.
The mum discovered that pairs of M&S school trousers have a secret second hem.
This handy feature means that the trousers can be extended by 3cm.
According to the M&S website, grow-proof hems add an extra 3cm onto the length of the trousers to help them "last all year".
She took to the Family Lockdown Tips & Ideas group on Facebook writing: "I was today years old when I found this out about M&S school trousers!
"How did I not know this? There is actually a proper double hem!!" The Sun reported.
It says: "Just unpick and press for an extra 3cm. Added stretch and an adjustable waist for a perfect fit".
All you have to do is cut along the blind stitching, remove the thread, let down the additional material and press.
The 'Skinny Leg Ultimate trousers' are stain and waterproof as well as crease resistant.
Unsurprisingly the post received a lot of attention from fellow parents with over 5,000 likes and tonnes of comments.
One person admitted: "I've always bought M&S trousers, how did i not know."
Another added: "I have never seen this thank you."
And others raised the savvy woman for sharing.
